feat(cart): add SumPaymentSelectionCartSplitPriceAmountByMethods (#568)

cart/interfaces/graphql/dto/cartSummary.go

@@ -100,6 +100,35 @@ func (cs CartSummary) SumPaymentSelectionCartSplitValueAmountByMethods(methods [
 	return &price
 }
 
+// SumPaymentSelectionCartSplitPriceAmountByMethods sum
+func (cs CartSummary) SumPaymentSelectionCartSplitPriceAmountByMethods(methods []string) *domain.Price {
+	if cs.cart.PaymentSelection == nil {
+		return nil
+	}
+
+	prices := make([]domain.Price, 0, len(methods))
+
+	for qualifier, charge := range cs.cart.PaymentSelection.CartSplit() {
+		found := contains(methods, qualifier.Method)
+		if !found {
+			continue
+		}
+
+		prices = append(prices, charge.Price)
+	}
+
+	if len(prices) == 0 {
+		return nil
+	}
+
+	price, err := domain.SumAll(prices...)
+	if err != nil {
+		return nil
+	}
+
+	return &price
+}
+
 // Contains tells whether a contains x.
 func contains(a []string, x string) bool {
 	for _, n := range a {

cart/interfaces/graphql/schema.graphql

@@ -15,6 +15,7 @@ type Commerce_Cart_Summary {
     hasAppliedDiscounts: Boolean!
     sumTaxes: Commerce_Cart_Taxes
     sumPaymentSelectionCartSplitValueAmountByMethods(methods: [String!]): Commerce_Price
+    sumPaymentSelectionCartSplitPriceAmountByMethods(methods: [String!]): Commerce_Price
 }
 
 type Commerce_Cart_Cart {

test/integrationtest/projecttest/graphql/schema/flamingo.me_flamingo-commerce_v3_cart_interfaces_graphql-Service.graphql

@@ -15,6 +15,7 @@ type Commerce_Cart_Summary {
     hasAppliedDiscounts: Boolean!
     sumTaxes: Commerce_Cart_Taxes
     sumPaymentSelectionCartSplitValueAmountByMethods(methods: [String!]): Commerce_Price
+    sumPaymentSelectionCartSplitPriceAmountByMethods(methods: [String!]): Commerce_Price
 }
 
 type Commerce_Cart_Cart {